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KOHLER PRO6.4E Spec Review

The KOHLER PRO6.4E is a portable open frame generator with a rated wattage of 5200 W and a starting wattage of 6400 W.

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Description

Zoom on the KOHLER PRO6.4E

In summary, the KOHLER PRO6.4E is a portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in outdoor fairs, festivals or events
  • Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
  • Homeowners in need of an emergency backup power for their essentials
  • Professionals who want to ensure that a power failure will not prevent them from working

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The KOHLER PRO6.4E is powered by a 277 cc KOHLER Command PRO® OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 5200W as well as a peak wattage of 6400W.

The generator features a simple traditional pull-start mechanism and also a convenient and easy-to-use electric starter (battery included). It is rated for a noise of 73.2 dBA (just slightly more noisy than a vacuum cleaner).

The PRO6.4E can operate for around 15 hours at 50% load with a full tank (fuel consumption around 0.53 GPH), due to its fuel capacity of 8 gallons. Refilling the fuel tank is facilitated by KOHLER’s Accu-Fill™ technology. It offers a 45% larger angled fuel inlet, which allows for an easier and safer pouring of gasoline as well as less spilling.

Since the PRO6.4E has a somewhat high THD (<6%), it is advisable to not use it for the powering of sensitive electronic devices.

Outlets

The control panel provides the upcoming 6 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120/240V 30A (L14-30R) receptacle
120V 30A (L5-30R) receptacle

It also sports 1 DC outlet: there's a 12V 8A receptacle allowing you to easily charge your batteries.

This KOHLER generator features an L5-30R receptacle, enabling an easy RV connection via an L5-30P to TT-30R adaptor. However, it is still not quite RV ready. Besides, because the PRO6.4E is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.

Portability

The dimensions of the KOHLER PRO6.4E, which are L29.4 x W21.4 x H22.3 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The design is ideal for rough environments and demanding outdoor use.

Although this generator is technically considered 'portable' (in the sense that it can be moved), its 198 lbs make it incredibly difficult to manually lift and transport. Nevertheless, thanks to its wheel kit (⌀10") and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

Features

Panel of the KOHLER PRO6.4E

The PRO6.4E's control panel

One of the many PRO6.4E's features is the data center (Maintenance Minder), included in its control panel, which conveniently provides information on the lifetime run hours and thus, helps you monitor its activity and status.

In addition to this info, the device’s light indicator will display if the oil level is too low.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.

From a security point of view, the generator is equipped with an automatic low oil shut-off (Oil Sentry™ technology) and an overload protection (circuit breaker), giving you a peace of mind during use.

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, KOHLER also included a battery charging cables in the PRO6.4E's packaging.

Emissions

The KOHLER PRO6.4E is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

The KOHLER PRO6.4E versus other generators

The following charts are provided to give you an idea of how some of the key specs of the KOHLER PRO6.4E compare to generators of similar power (between 4500 and 5500 W).

  • Considering its dry weight of 198 pounds, the KOHLER PRO6.4E is one of the heavier generators producing between 4500 and 5500 running watts. If you are concerned by weight, one of the champions in the above mentioned power range is the WEN 56500, with a dry weight of just 119 pounds.
  • Among the generators of a comparable running wattage, this generator with a lowest noise of 73.2 dBA can be judged as noisy. If noise emissions are important to you, one of the least noisy generators of this power range is the Honda EU7000iS with only 52 dBA.
  • With a run time of around 15 hours at 50% load, the PRO6.4E has one of the highest run times, compared to its similarly powerful peers.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. This generator reaches an estimated fuel consumption of 0.53 GPH (gallon per hour) at a 50% load, making it average, for the previously mentioned wattage range. If fuel consumption is your top priority, we suggest to check out the Westinghouse WGen5300v, which has a fuel consumption of only 0.35 GPH and thus, is one of the most efficient devices in our database.

Price comparison

As you can see from this interactive chart, when compared to other 4500-5500W generators, the KOHLER PRO6.4E is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • GFCI Outlets
  • Electric start
  • High run time
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • No remote start
  • No spark arrestor
  • On the heavy side (198 lbs)
  • On the noisy side (73.2 dBA)

Do you own the KOHLER PRO6.4E and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine277 cc KOHLER Command PRO® OHV 4-stroke
Starting systemRecoil, Electric
Power
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts5200 W
Starting watts6400 W
Running amps (@120/240V)43.3/21.7 amps
Peaks amps (@120/240V)53.3/26.7 amps
Run time @50% load15 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120/240V 30A (L14-30R)
  • 1x 120V 30A (L5-30R)
DC outlets1x 12V 8A
Data centerLifetime run hours
IndicatorsLow oil
Fuel tank8 gal
Fuel gaugeYes
Misc
Weight198 lbs
Approx. dimensions (L x W x H)29.4 x 21.4 x 22.3 in
Noise (lower limit)73.2 dBA
THD< 6%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorNo
NeutralBonded to frame
Accessories includedBattery charging cables, battery, and wheel kit
Warranty3 years

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About KOHLER

Kohler Co., founded in 1873 by John Michael Kohler, has been one of the leading US manufacturing companies for over a century, with its products ranging from furniture to power generators. Its American based Kohler Power division focuses on the latter, scaling from portable generators to industrial-scale devices. Its rich history and great reputation serve as a testament to the quality of their products. The company has in recent years outsourced some of its production overseas, to China, but US made generators can still be found among their product selection.

Warranty Information

The KOHLER PRO6.4E is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of KOHLER generators, please consult KOHLER's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-544-2444.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Dish washer15003000
Sump pump (1/2 hp)10502150
Radio100100
Total4150 W5650 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Toaster oven800800
Slow cooker270270
Bug zapper8080
Total4140 W4730 W
For workTable saw18004500
Grinder14002500
Drain cleaner250250
Bug zapper8080
Total3530 W6230 W

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